Wht's the best n basic material to prepare for Oracle SQL certification

Can anyone suggest me the best material to prepare for the Oracle SQL certification.

> By the way, why did you open the thread
As voice number 1.
> and answered it for yourself
As voice number 2...
> as if, you are addressing some second person,
.. addressing voice number 1.
I have no problem with that Sarma. It is that 3rd little voice in the OP's head that makes me quite nervous.
;)

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